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[Qemu-devel] [PATCH] cris: Fix NMI-flag handling on crisv10.
From: |
Lars Persson |
Subject: |
[Qemu-devel] [PATCH] cris: Fix NMI-flag handling on crisv10. |
Date: |
Thu, 14 Jun 2012 16:23:55 +0200 |
- The M-flag is encoded in different bits on cris v10 and cris v32.
Signed-off-by: Lars Persson <address@hidden>
---
cpu-exec.c | 17 ++++++++++++-----
target-cris/cpu.h | 3 ++-
target-cris/helper.c | 4 ++--
target-cris/op_helper.c | 4 ++--
4 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/cpu-exec.c b/cpu-exec.c
index 83cac93..ce4718f 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -467,11 +467,18 @@ int cpu_exec(CPUArchState *env)
do_interrupt(env);
next_tb = 0;
}
- if (interrupt_request & CPU_INTERRUPT_NMI
- && (env->pregs[PR_CCS] & M_FLAG)) {
- env->exception_index = EXCP_NMI;
- do_interrupt(env);
- next_tb = 0;
+ if (interrupt_request & CPU_INTERRUPT_NMI) {
+ unsigned int m_flag_archval;
+ if (env->pregs[PR_VR] < 32) {
+ m_flag_archval = M_FLAG_V10;
+ } else {
+ m_flag_archval = M_FLAG_V32;
+ }
+ if ((env->pregs[PR_CCS] & m_flag_archval)) {
+ env->exception_index = EXCP_NMI;
+ do_interrupt(env);
+ next_tb = 0;
+ }
}
#elif defined(TARGET_M68K)
if (interrupt_request & CPU_INTERRUPT_HARD
diff --git a/target-cris/cpu.h b/target-cris/cpu.h
index 73004af..4f4df6d 100644
--- a/target-cris/cpu.h
+++ b/target-cris/cpu.h
@@ -69,13 +69,14 @@
/* CPU flags. */
#define Q_FLAG 0x80000000
-#define M_FLAG 0x40000000
+#define M_FLAG_V32 0x40000000
#define PFIX_FLAG 0x800 /* CRISv10 Only. */
#define F_FLAG_V10 0x400
#define P_FLAG_V10 0x200
#define S_FLAG 0x200
#define R_FLAG 0x100
#define P_FLAG 0x80
+#define M_FLAG_V10 0x80
#define U_FLAG 0x40
#define I_FLAG 0x20
#define X_FLAG 0x10
diff --git a/target-cris/helper.c b/target-cris/helper.c
index dcc19ef..bfbc29e 100644
--- a/target-cris/helper.c
+++ b/target-cris/helper.c
@@ -127,7 +127,7 @@ static void do_interruptv10(CPUCRISState *env)
case EXCP_NMI:
/* NMI is hardwired to vector zero. */
ex_vec = 0;
- env->pregs[PR_CCS] &= ~M_FLAG;
+ env->pregs[PR_CCS] &= ~M_FLAG_V10;
env->pregs[PRV10_BRP] = env->pc;
break;
@@ -185,7 +185,7 @@ void do_interrupt(CPUCRISState *env)
case EXCP_NMI:
/* NMI is hardwired to vector zero. */
ex_vec = 0;
- env->pregs[PR_CCS] &= ~M_FLAG;
+ env->pregs[PR_CCS] &= ~M_FLAG_V32;
env->pregs[PR_NRP] = env->pc;
break;
diff --git a/target-cris/op_helper.c b/target-cris/op_helper.c
index b92c106..ac7c98c 100644
--- a/target-cris/op_helper.c
+++ b/target-cris/op_helper.c
@@ -247,8 +247,8 @@ void helper_rfn(void)
if (!rflag)
env->pregs[PR_CCS] |= P_FLAG;
- /* Always set the M flag. */
- env->pregs[PR_CCS] |= M_FLAG;
+ /* Always set the M flag. */
+ env->pregs[PR_CCS] |= M_FLAG_V32;
}
uint32_t helper_lz(uint32_t t0)
--
1.7.2.5
- [Qemu-devel] [PATCH] cris: Fix NMI-flag handling on crisv10.,
Lars Persson <=